3813919 has 4 divisors (see below), whose sum is σ = 3823200. Its totient is φ = 3804640.

The previous prime is 3813913. The next prime is 3813941. The reversal of 3813919 is 9193183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9193183 = 167 ⋅55049.

It is a cyclic number.

It is not a de Polignac number, because 3813919 - 2¹⁹ = 3289631 is a prime.

It is a super-2 number, since 2×3813919² = 29091956277122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3813913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3994 + ... + 4855.

It is an arithmetic number, because the mean of its divisors is an integer number (955800).

Almost surely, 2^3813919 is an apocalyptic number.

3813919 is a deficient number, since it is larger than the sum of its proper divisors (9281).

3813919 is an equidigital number, since it uses as much as digits as its factorization.

3813919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9280.

The product of its digits is 5832, while the sum is 34.

The square root of 3813919 is about 1952.9257538370. The cubic root of 3813919 is about 156.2393733573.

The spelling of 3813919 in words is "three million, eight hundred thirteen thousand, nine hundred nineteen".